The Red Hazel Company has received its router from Cisco and is ready to install Cisco Unified CallManager Express. Where will the company find its Cisco Unified CallManager Express software?（）

• A、Cisco.com
• B、embedded in Flash on the hardware 
• C、e-mail download from Cisco 
• D、on a CD-ROM included with installation materials 
• E、only from a Cisco SE, due to special licensing considerations